Minimserver on QNAP not running after HD expansion

[TomP]

On my QNAP TS-251B, I had to replace a failed 3TB RAID1 drive and replaced it with a 4TB drive, then successfully replaced to other 3TB drive and expanded the Pool to 4TB.

I've been running Minimserver 2.1.2 for some years without issue but notice that after this HD work, MinimWatch now does not see it running, although it does show as running OK on my other QNAP TS-253A.

I have tried stopping and starting, but that does not work.

Help / advice would be most welcome, thanks.